1 . 已知命题
方程
有两个不相等的正实数根,命题
方程
无实数根.若“
或
”为真命题,则实数
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36bcb4df710cf7fc5a4159380ae5451e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c73e4820a9e0a5b91eb917d0e4befb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020高三·全国·专题练习
2 . 已知
,命题
:对任意实数
,不等式
恒成立,若
为真命题,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768888e9248507d009a721806695eec8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
3 . 设有两个命题:(1)不等式
的解集为
;(2)函数
恒有意义,如果这两个命题至少有一个是假命题,则
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf35aa061a50ea5122ac465c60c3d15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7856730bd9239c2c90242a56ca026e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-07-16更新
|
262次组卷
|
4卷引用:上海市进才中学2019-2020学年高二下学期期末数学试题
上海市进才中学2019-2020学年高二下学期期末数学试题(已下线)1.3+简单的逻辑联结词(重点练)-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-1)(已下线)1.3+简单的逻辑联结词(重点练)-2020-2021学年高二数学(文)十分钟同步课堂专练(人教A版选修1-1)北京市海淀实验中学2021-2022学年高一上学期10月学科活动考试数学试题
名校
4 . 已知命题
,
恒成立,命题
,使得
,若命题
为真命题,则a的取值范围是________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82cd698072fd7ab2e5b5e65b94c9cd3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b29cfd17c7b386ec7017af69a0e2207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0940ea27b4f777f2ebe0a7837952b82c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c52053ed79a7a6b28628770e185ffaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ba9507faa6aaad768f19a0ebdad5a9.png)
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名校
5 . 已知命题
方程
表示焦点在
轴上的椭圆,命题
关于
的方程
无实根,若“
”为假命题,“
”为真命题.则实数
的取值范围为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16688ad5528e9f6b09ac35e974a9e089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29690da67fe0add5ba700e11dcb6959b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
6 . 已知命题
,
;命题
,
,若
为假命题,则实数
的取值范围是_______________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bea9702708f8463975c94119fa50f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b6263f1d9b8e5824edc0b6e9abec2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187eaa89fef372443e43b0e4cd6e5638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b52b73ed3e1dcb9e8e5830731d491c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
7 . 已知命题
:
,
;命题
:
,
,若
为真命题,则实数
的取值范围是_______________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6547594b63acf00e628d19667a959e2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4a8434630b36f3c979fcfe0b4230c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b52b73ed3e1dcb9e8e5830731d491c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
8 . 已知命题
,且
,命题
,
恒成立,若命题
为真命题则
的取值范围是:____ ,
为假命题,则
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f1ab002d55d83c2c3f0f88c34aced1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e67e2f06de3e729ae5d86c2ed2d74e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72a6fc004861e4a5780736acea3a9e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f754145f648450f9e14cec4b17140a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020-05-01更新
|
408次组卷
|
2卷引用:宁夏贺兰县景博中学2020-2021学年高二上学期第二次月考数学(文)试题
名校
9 .
,
,若
且
为假命题,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d08be2e49da8bde1fd2a01fb3bf8f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd20728bbaa5ccf27feef06bb33f7c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2020-03-26更新
|
475次组卷
|
5卷引用:江西省南康唐江中学2019-2020学年高二下学期开学线上检测数学(文)试题
江西省南康唐江中学2019-2020学年高二下学期开学线上检测数学(文)试题(已下线)第一章+预备知识(基础过关)-2020-2021学年高一数学单元测试定心卷(北师大2019版必修第一册)黑龙江省哈尔滨市第九中学2020-2021学年高二下学期四月学业阶段性评价考试数学(理)试题四川省泸州市泸县第四中学2021-2022学年高二下学期期中数学理科试题第一章 预备知识单元测试(基础过关)-2020-2021学年高一数学北师大2019版必修第一册
10 . 已知命题
,使得
,命题
,
,若
为真命题,则实数
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03df311792af5d8e9a463507defb258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770efc975cd4b5991c01c8ea59687316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580c9531722344a73c988476445bd8eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7dd3d7fa8ed2d01eebc236a7a1c060e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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